Recently, employees at the Shanghai Metro’s Railway Station Stop have been busy learning dialects from other parts of the country, aims to provide better service to travelers from outside the city.
A. where
B. that
C. which
D. it
网友回答
A. where
B. that
(答案→)C. which
D. it
解析：考查定语从句。句中which引导非限定性定语从句，指代前面的一句话，故选C。